Chin muscles tonifier



FIG. 1 is a perspective view of a chin muscles tonifier showing a new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view therof; and,

FIG. 7 is a bottom view thereof.

The broken lines represents top-stitching. 

The ornamental design for a chin muscles tonifier, as shown and described. 